Let-off-rod operator



W. CURRAN.

LET-OFF ROD OPERATOR.

APPLICATION FILED OCT. 30. 1919.

PatentedSept. 21,1920.

- Wilma/so WILL IA1VI 'CURBAN, or LnwIs'roN, MAINE,

To all whom it may concern r 7 Be it known that 1,;W1LL1AM CI JR RAN, a citizen of the United States, res1d1ng at Lewiston, in the county of Androscoggin and State of Maine, have invented certain new and useful Improvements in Let-OH Rod Operators and I do declare the following to vbe a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to which it appertains to make and use thesame.

' My invention relates to looms, principally of the Draper type, and more particularly to operating means for the yarn let-off mechanism. Heretofore', on the rock shaft which carries the lay sword, an arm has been attached for shifting the operating rod of thelet-off mechanism, but it has been found that in time, considerable relative movement of the arm and the sword is allowed, due to wear. This often causes serious injury to the machine as well as the production of an inferior product. It has been suggested that the operating rod for the let-off mechanism be operated directly from the sword, but this necessitates changes in the shape of the rod or in the position of the sword, and often required other alterations in the machine. My invention however, has for its object to provide a simple and inexpensive device for attachment to the usual loom without making any alterations whatever therein, said device being constructed to be rigidly held by the sword and the actuating arm of the aforesaid rod, against relative movement.

With the foregoing in view, the invention resides in the novel construction and combination of parts hereinafter described and claimed, the descriptive matter being supplemented by the accompanying drawing.

Figure 1 is an end elevation partly 111 transverse section, showing the application of the attachment to a loom.

2 is a front elevation partly in section showing the attachment and associated parts. 7

Fig. 3 is a perspective view of the attachment.

In the drawing, I have shown a well known type of loom which includes a lay 1, a lay sword 2, a longitudinal rock shaft 3 carrying said sword, a yarn reel 4, a yarn let-off mechanism 5, and an operating rod 6 nssrenon or TREMBLAY, or LEWISTON, MAINE, arm OI\IE- TH1,RD,T01 HENRY w; CAKES, or AUBURN, MAINE. V V

ONE-THIRD TO PATRICK F.

'1. LET-OIEF-ROD ornrteironh for saidmechanism." As above stated,'tlie rod 61s commonly operated from an arm on the shaft stancesprovicled with a crank arm 7 to which the rod operating arm is secured. In carry ing out my invention", however, I remove the last mentioned arm and substitute a vertical arm 8 havmg a rigid lateral arm 9 at its ree end, said lateral arm extending to the sword 2 and bein with the latter. ly any preferred means such as a pin 10 provided with a T-head 11,

the arm 8 is connected withthe rod 6, and 7 due 'to the provision of the'lateral arm .9,

rigid with respect to said arm 8 and the sword 2,; these parts are effectively held against any relative movement, thusovercoming difliculties heretofore encountered, Y The arm 8 is by preference provided with a slot 12 to receive the usual attaching bolt 13 which extends through the crank arm 7 and in most instances I equip said arm 8 with parallel ribs 14 straddling the crank arm to prevent any pivotal movement of the one with respect to the other. If any slight motion of this character exists, however, it may be negatived by means of an adjustable terminal with which the free end of arm 9 is equipped, said terminal being by preference in the form of a set screw 15 having'a' lock nut 16. The screw 15 is adapted to be threaded through the arm until it bears tightly against the sword 2 and during this movement, any lost motion between the arms 7 and 8 and any possible movement of said arms with respect to the sword, is effectively taken up. Thus, when the lock nut 16 is tightened, it is insured that the shaft 3, the arm 7-8, and the sword 2, shall move as a single rigid structure.

From the foregoing, taken in connection with the accompanying drawing, it will be seen that I have produced an extremely simple and inexpensive, yet a highly efficient, durable and easily installed attachment for looms, which will overcome all lost motion between the sword and the actuating arm for the let-off operating rod, thus preventdevice shown, I prefer to embody the at-.

3, and said shaft is in most inheld in rigid relation Specification ofLetters Patent. Pte d 1, 0 Application filed 0ctober 30, 1915? Serial No. 334,416.

.ing the production of inferior work and I tachment in this form, but within the scope of the invention as claimed, numerous minor changes may well be made.

I claim:

1. In combination with the lay sword of a loom, the rock shaft carrying said sword, and the operating rod for the yarn let-off mechanism; a vertical arm rising from said rock shaft, and connected with said operating rod, and a lateral arm extending from said vertical arm to said sword and rigid withrespect to both to hold them'against relative movement.

'2. In combination with the lay sword of a loom, the rock shaft carrying said sword,

and the operating rod for the yarn let-off mechanism; a vertical arm rising from said rock shaft, and connected wlth sald operat ing rod, a lateral arm. rigidly extending from said vertical arm to said sword, and an adjustable terminal on the outer end of said lateral arm bearing against said sword.

3. ln combination with the lay sword of a loom, therock shaft carrying said sword, and'the operating rod for the yarn let-off mechanism; a vertical arm rising from said rock shaft, and connected with said operating rod, a lateral arm rigidly extending from said vertical arm to said sword, and

a set screw threaded through the outer end of said lateral arm and bearing against said sword.

4-. A loom attachment comprising an arm and means-for attaching it to the swordcarrying rock shaft, means for connecting the operating rod of the let-off mechanism to said arm, and a lateral arm extending rigidly from said first named arm and adapted tobear againstthe sword.

5. A loom attachment comprising an arm and means for attaching it to the swordcarrying roclrshaft, means for connecting the operatingrod of the let-oif mechanism to said arm, a lateral arm extending rigidly from said first named arm, and an adjustableterminal on the free end of said lateral arm adapted to bearagainst the sword.

, 6. A loom attachment comprising an arm and means for attaching it to the swordoarrying rock shaft, means for connecting the operating rod of the let-off mechanism to said arm, a lateral arm extending rigidly fromsaid firstnamed arm, and a set screw threaded through the free end of said lateral arm and adapted to bear against the sword.

In testimony whereof m hand. 7

y WILLIAM CURRAN.

I have hereunto set 

